taxon	region
t1	a
t2	a
t4	a
t17	a
t25	f
t26	b
t20	f
t21	d
t14	d
t5	d
t8	a
t35	a
t36	e
t3	c
t9	c
t10	c
t15	f
t16	b
t31	a
t32	d
t33	e
t34	b
t18	f
t19	b
t12	b
t13	f
t7	f
t11	b
t24	f
t29	f
t30	a
t22	d
t23	b
t27	b
t28	b
t6	b